Elastic novelty yarn



JUIYZ, 1943 s. W. ALBERI-'ER 2,324,989 i ELASTC NOVELTY YARN Filed Deo.4, 1940 INVENTOR .Sterling ejer @YJ/a# ATTORN EY Patented July 2 0, 19432,324,989 ELAs'rrcNovEL'rYYARN ,A f

Sterling W. Alderfer, Akrnn, Ohio, assignor to The Firestone Tire &Rubber Company, Akron,

`Ohio, a corporation of Ohio Application December 4, 1940, Serial No.368,477

` z claims. lol. 57-15z) *n This invention relates to the textile art,espe- .cially to anv elastic novelty yarn which is formed of separateelastic and inelastic threads, yarns, cords, or strands.

A general object of the present invention is to provide a novel type ofelastic yarn, which has desirable properties, and a method of makingSame.

A further object ofthe invention is to provide an elastic novelty yarnwhich producesv unusual effects when fabricated to article form,

The foregoing and otherobjects will be manifest from the followingspecification which is described with particular reference to theaccompanying drawing -of whichz Figure 1 is an elevation of a slightlytensioned elastic yarn embodying the invention, which yarn is strandedout at one end to show the components thereof;

Figure 2 isan elevation of the yarn 'of Figure 1 when it is relaxed;andv Figure 3 is a diagrammatic elevation of apparatus for forming theyarn of Figure 1. lReferring in detail to the drawing, an elastic yarn Iis shown, which yarn includes a rubber thread IIwhich is twistedtogether with a' core thread I2. A yarn I3 is loosely wrapped around thetwo threads II and I2 as a unit in the same direction as the twist ofthe threads Il and'l2'.

Note that the convolutions of the yarn I3 around n' the elastic threadare drawn into substantially abutting relation when the/yarn I0 isrelaxed as the yarn I3 is wound upon the threads II and I2 when therubber thread II is tensioned. A binder thread I4'is wrapped around theunit formed of the elastic thread II, core thread I2 and yarn I3 to'retain vthe yarn and thread together and form a finished yarntherefrom, the binder thread being' wound in the opposite direction tothe 'yarn I3, as shown.

' The binder -thread I4, the core thread I2, and the yarn I3 all may bemade from cotton, wool or other suitable materials. Note that loopsand/or convolutions of the yarn I3 extend radially outwardly of theelastic yarn I0 between the yarn I0 may be tensioned any desired amount,

` 'or else completely relaxed to bring such loops or convolutions of theyarn I3 into the desired relationship and vary the appearance of theyarn. In all events, the yarn ,I0 presents an attractive appearance andis adaptedto befabricatedin eitherl tensioned or relaxed'form..Obviously the ,elasticity of the `yarn adapts it for new and desir-I llable'uses over ordinary novelty yarns. i l

A Theyarn I0 maybe made upon apparatus including rollers 20 and 20abetween which the core thread I2 and elastic thread II are drawn, theelastic thread being held under tension as the vyarn I0 is produced. Thecore. thread I2 is wound upon a bobbin 2'I and drawn' therefrom over aguide 22 while the elastic thread II is carried by`a flanged roll 23which-,is supported .on

a roll- 24y driven'by a chain 25. The outer surface of the thread IIcarried by the roll 23 rests directly upon the roll k2,4 so that, bydriving the roll 24 at a uniform speed, the elastic thread is unwrappedfrom the roll'23- at a uniform rate. The

elastic thread II should be placed upon the roll 23 under uniformtension to aid in removing it `therefrom. at a uniform rate.

The elastic thread and core thread arearranged in ,parallel and passover a guide roll 26 the bobbin 30 over a guide 35 by driven rolls 33after passing through the rolls 20 and 20a and then overa faller bar211. The yarn I3, carried on a bobbin 30, is fed in to the elasticthread and co're .thread faster than the threads are -drawn through ltherolls 23 and 20a and at an,

appreciably angle to their axes to facilitate wrap- Y ping ittherearound. The yarn I3 is drawn from and 34. Thecomposite yarn passesthrough a guide 28, a ring traveler 29 ,and then is wrapped around abobbin 3|. The elastic thread and the y core thread are twisted togetherand the yarn I3 'is twisted therearound by rotating the bobbin through adriven pulley 32.l The ring traveler 29 is slidably mounted forrotationon a vertically movable bar 36 so that the ring traveler canmove lup and down withrelation to the bobbin 3l to aid in distributingthe yarn thereover.

The yarn III is completed by passing the unit formed from the' core'thread I2, elastic threadJ II and yarn I3 through the apparatus asecond time. Il, Vthe second step of forming the yarn I0, the bbin 3| issubstituted for the bobbin 2I and the yarn thereon is led therefromthrough the rolls 20 and 20a and over the guide 26 and failer bar 21,after which the binder thread vIl n the convolutions of the binderthread Il and that is led to the yarn in a manner similar to that inwhich the yarn I3 is fed. The binder thread I4 is twisted. onto theYunit formed by the elastic thread, core .thread'and yarn by leading the'n composite yarn through the guide 28 and 'ring' traveler' 29 to arotating bobbin substituted for the bobbin 3i. Of course, the bobbin. inthis case will be driven in the opposite direction from the bobbin 3| towind the binder thread oppositely to the yarn I 3.

It will be'appreclated that the yarn lo may be produced with the elasticthread I I under any desired tension. Usually both the core thread I2and the binder thread I4 are wrapped around the elastic thread II whenit is under substantially the same tension and about equal lengths ofthe binder and the core thread are so vpositioned whereby both threadslimit the extensibility of the yarn I0.

It will be seen that novel and unusual effects can be produced bycoloring any of the threads I2 or I4, or, especially, the yarn I3, whichcolor- L ing may vary in different sections of the thread or yarncolored.

In some cases, it may be desirable to feed the unit formed ofthe elasticthread II, core thread I2, and yarn I3 to the rolls 20 and 20a by apositive feed when completing the yarn I0. That is,

y the bobbin 3| could be provided with end flanges.

in, it will be apparent that modification thereof 'may he made withoutdeparting from the scope of the invention as defined in the appendedclaims.

What is claimed is:

1. 'An elastic novelty yarn comprising an e1astic thread, a core threadwrapped around said elastic thread to form a unit which lies along theaxis of the novelty yarn when it is tensioned, a yarn loosely wrappedaround said unit in a direction similarto the twist thereof to form aplurality of loose closely adjacent convolutions therearound when thenovelty yarn is relaxed,

and a binder thread wrapped around the unit formed of said elasticthread and said yarn in the direction' opposite to the direction inwhichsaid yarn is wrapped around said elastic thread to form elastic noveltyyarn. w

2. An elastic novelty yarn comprising an elastic thread llying along theaxis of the novelty yar-n, a yarn loosely wrapped around said elasticthread to form a plurality 'of loose closely adjacent convolutionstherearound when the novelty yarn is relaxed, and abinder thread wrappedaround the unit formed of said elastic thread and said yarn in thedirection opposite to the direction in which said yarn is wrapped aroundsaid elastic core thread to form elastic novelty yarn. r STERLING W.ALDERFER.

